Metal mold low-pressure casting mold for crankcase of motor train unit air compressor

Abstract

The invention provides a metal mold low-pressure casting mold for a crankcase of a motor train unit air compressor. The metal mold low-pressure casting mold comprises a lower mold, a first sliding block, a second sliding block, an upper mold, a manual loose core and a feeding head sand core. A casting cavity is defined by the lower mold, the first sliding block, the second sliding block, the upper mold and the feeding head sand core. The lower mold comprises a lower mold base and an inner cavity sand core. The inner cavity sand core is clamped into a first sand core positioning groove. The first sliding block and the second sliding block are symmetrically arranged on the two sides of the inner cavity sand core. The side, away from the lower mold base, of the first sliding block is provided with a second sand core positioning groove matched with the feeding head sand core. The side, away from the lower mold base, of the second sliding block is provided with a third sand core positioning groove matched with the feeding head sand core. The manual loose core is connected with the lower mold base. The feeding head sand core is arranged in a feeding head sand core positioning groove. The upper mold base is connected with the lower mold base through a first positioning block. The metal mold low-pressure casting mold is adopted, the labor intensity of workers is low, and the mechanical performance of produced castings is stable.

Description

technical field [0001] The invention relates to the technical field of manufacturing the crankcase of the air compressor of the train set, in particular to a low-pressure casting mold of metal type for the crankcase of the air compressor of the train set. Background technique [0002] With the global energy problem and the deteriorating living environment of human beings, in the face of increasingly serious traffic congestion on roads, and aviation concerns about high oil prices, high-speed railways are fast, with large carrying capacity, low energy consumption, low cost, and popular green and environmentally friendly travel transportation Tools are evolving at a rapid pace. The EMU train brake system is a key component of high-speed rail operation, and the domestic EMU train brake system air compressor crankcase has always relied on imports from Japan. In order to respond to national policies, key parts must be domestically produced and require continuous innovation. [00...

AI Technical Summary

Problems solved by technology

[0003] At present, the sand casting process is used for the crankcase of the air compressor of the Japanese EMU, but in actual production, it is found that the use of sand core casting has low productivity, harsh production environment, high labor intensity, high scrap rate and serious waste of resources. Casting defects such as unstable mechanical properties, poor product appearance quality, and poor dimensional consistency

Images